Topcoder High School SRM 5 250 pt - Level one - TV Size problem solution

Topcoder High School SRM 5 250 pt - Level one - TV Size problem statement: http://community.topcoder.com/stat?c=problem_statement&pm=6486&rd=10057

Topcoder High School SRM 5 250 pt - Level one - TV Size problem editorial: http://community.topcoder.com/tc?module=Static&d1=hs&d2=match_editorials&d3=hs_srm5

Topcoder High School SRM 5 250 pt - Level one - TV Size problem solution: 

#include <iostream>
#include <vector>
#include <cmath>
using namespace std;

class TVSize {
    public: vector <int> calcSize(int d, int h, int w) {
        double a, r;
        vector <int> v;
        a=(double)sqrt(h*h + w*w);
        r=(double)d/a;
        v.push_back(h*r), v.push_back(w*r);
        return v;
    }
};

note: i suggest you to use (double), otherwise you won't get expected result. without (double) my prog returned 36, 64 instead of 25, 45 for sample 0. peek other AC codes also.